Well.. partly I get depressed when I get broke up with but I don't think every guy is the one. I mean, honestly, no one falls in love at 14 or 15..
I don't know. Some do though.
Just straight up tell him that she is not the one and that he will find the right one when he is a little older. Now, it is just lust. Later, it will be true love.
I mean, is that what he is looking for anyways?